Sulky for walk-behind mowers



FIG. 1 is an oblique perspective of a "sulky for walk-behind mowers" showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is top view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof. 

I claim the ornamental design for a "sulky for a walk-behind mowers," as shown and described. 